This book is a brief introduction to the Enneagram.

It includes a test to help you find your type, overviews of each of the 9 types, and breakdowns of how each type relates to every other type in work, home, and relationship contexts. That's pretty much the whole book.

I would say the majority of the book is taken up in sections explaining how type two and type five get along at work, how type two and type six get along at work, how type two and type seven-- all the way through the many permutations. This is mildly helpful, but only if you know your friends', coworkers', and relatives' Enneagram numbers. The overall introduction of the system at the beginning is more a definition of terms than anything else.

This book saves you the work of clicking through seventeen web pages to find what you're looking for, but in reality it gives you the same exact information you could find online. If you're looking for anything more in-depth than a quiz and a brief profile, I would avoid paying money for this book and instead look elsewhere.